{
  "ptid_time": "137_S_0158_2007-09-13",
  "img_path": "/data/qiuhui/data/adni/images/137_S_0158/2007-09-13/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 12,610 mm³, 65.9% below the reference mean. With a Z-score of -1.78 (3.8th percentile), this represents moderate atrophy; hippocampal volume measures 6,062 mm³, 6.7% below the reference mean. With a Z-score of -0.53 (29.7th percentile), this represents normal volume ; whole brain volume measures 855,095 mm³, 7.9% below the reference mean. With a Z-score of -0.95 (17.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,507 mm³, 1.3% above the reference mean. With a Z-score of 0.07 (52.8th percentile), this represents normal volume ; fusiform gyrus volume measures 16,556 mm³, 2.8% above the reference mean. With a Z-score of 0.21 (58.2th percentile), this represents normal volume ; middle temporal gyrus volume measures 16,516 mm³, 8.4% below the reference mean. With a Z-score of -0.75 (22.8th percentile), this represents normal volume . ",
  "text_data": "Age is 81.9 years. Gender is Female. Education: 13 years. MMSE: 30.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The ventricular volume shows moderate atrophy, but all other brain regions (hippocampus, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges. The MMSE score of 30 is intact, and there is no APOE4 risk allele.  \nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (ventricular atrophy may warrant monitoring, but no other markers suggest impairment",
  "timestamp": "2025-07-26T16:07:12.385339"
}